IndentStyle.vim

command -nargs=1 IndentStyle call IndentStyle("<args>")

let g:IndentStyle = "none"

fun IndentStyle(style)
  if a:style == "ruby"
    "ruby style:
    set tabstop=2
    set shiftwidth=2
    set expandtab
    let g:IndentStyle="ruby"
  endif
  if a:style == "phusion"
    "phusion style"
    set tabstop=2
    set shiftwidth=2
    set noexpandtab
    let g:IndentStyle="phusion"
  endif
endf

autocmd BufWinEnter * call IndentStyle(g:IndentStyle)